<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login</title>
<script type="text/javascript" language="javascript">
	window.onload=function(){
		alert("aaaa");
	};
</script>
</head>
<body>
<form id="form" action="#" method="post">
	<input id="username" type="text" name="username">
	<input id="password" type="password" name="password">
	<input type="submit" value="submit">
</form>
<label id="iderrormsg" style="color: red"></label>
</body>
</html>